Gaseous-fuel burner



Dec. 18, 1928. 1,695,587

J. H'ARRIS GASEOUS FUEL BURNER Filed March 21, 1927 /7 //l dbbonoo olbooo INVENTOR Patented Dec. 1 8, 1928.

UNITED STATES JOHN HARRIS, 01' CLEVELAND, OHIO, ASSIGNOR OF ONE-HALF JAMES R; ROSE, F

PATENT oFFlcE.

EDGEWORTH, PENNSYLVANIA. 1 v

GASEOUS-FUEL BURNER. I

Application filed Harch 21, 1927. Serial No. 176,907. i

more of the heavier hydrocarbon gases, such as hexane, butane propane and ethane, or a mixture of such gases.

A further and more limited object of theinvention is to enable such gases to be burned completely, and with the production of a blue flame almost immediateiy upon placing the burner in operation, urther objects and advantages of the invention will appear hereinafter and will be realized by the combinations of elements embodied in the a claims hereof.

Referring to the drawings, Fig.1 repre sents a plan view of a burner constructedin accordance with my invention, a part of the mixing tube being broken away; Fig. 2 a side elevation of said burner, the supply pipe bein shown in section; and Figs. 3 and 4 are etails in sections, correspondin tively to the lines 3-3 and 4-4 0? Fig. 1.

The gases to which my'burner is particularly 'ada ted are gases containing one or more of t e richer or heavier hydrocarbons. These gases, being dispensed in liquid form, must be converted quickly into a gaseous -or aeriform condition in order to secure complete combustion thereof. Furthermore, this conversion should be accomplished practically immediately upon the starting of the burner in operation. For the pur taining these results, I have rovi ed a burner which comprises genera {I a central distributing chamber 1, from w ich the burner arms 2--7 radiate. The fuel for the bur er is supplied to the chamber 1 by means 0 a mixing tube 8, which nearly surrounds the burner, communicating with the chamber 1' between the burner arms 6 and 7 The inlet end of-this mixing tube is rovided with a bell 8, and the bore is somew at contracted at 8?, just beyond thejpointwhere the bell merges with the body of the mixing tube, to insure the pro er proportion of air to the fuel delivered mto the said tube and to provide for the expansion of such fuel in the respecso of ob I part of the mixing tube beyond such1contraction.

9 denotes a supply pipe for the gas, said pipe supporting a valve 10 by means of a stuffing box 11, 12, mounted in one side thereof and a nozzle 13 mounted in the opposite side thereof. .The valve is threaded into the stuffing box member 12 and is provided with a conical end 14 adapted to engage corresponding conical end 13? of the nozzle, the valve bein provided with a needle point 15 which is apted to be projected through the jet orifice of the nozzle thereby toclear the same from sediment etc.

It will be noted, by reference to Fig. 4:, that each burner arm is provided in the upper surface with a V-shaped groove 16 extending the lengththereof and that the burn er orifices 1-7 are formed in opposite walls of said groove, the orificeson one side of the groove being staggered with respect to those, on the opposite side, the arrangement being such that the flames proceeding from the orifices in one wall, of the groove are arranged to heat in a most efi'ective manner the wall of said groove opposite thereto; the staggering of the orifices prevents the imingement of the flames from one set of orices upon those from the opposed set of orifices, I

In the operation of the burner, the liquefied gas is discharged from'the nozzle 13, 13 into the mixing tube, where it quickly expands, mixing with the" air and, after the said burner as it flows through the mixing tube to the chamber 1. In addition, the gaseous mixture within the *burner is heated efiiciently by reason of the construction ofthe burner arms and the arrangement of the orifices in the grooves, as pointed out'hereinbefore.

Because of this arrangement of 'themixing tube and the construction of the burner arms, I am-enabled to burn gases of the type referred to with a blue flame, almost immediately upon starting the burner in operation. Furthermore, because the V-shaped grooves 16 extend to the outer ends of the burner arms,-should any unvaporized or un-' lot the burner, thereby preventing the clogging of the orifices'i thus described my invention, what with a V-shaped groove in the top thereof and being provided with burner orifices .on opposite sides of said 'roove, the orifices on one side of the groove being arranged to discharge in proximity to the part of the arm opposite thereto and being staggered with respect to the orifices on the opposite side of said groove.

2. A burner comprising, in combination, a hollow burner body, a combined mixing and expansion tube arranged in close proximity to said body, means for delivering a mixture of fluid fuel and air into the receiving end of said tube, the said burner body being provided with a V-shaped groove and being provided with burner orifices on opposite sides of said groove, the orifices on one side of the groove being staggered with respect to j the orifices on the opposite side of said groove and the said orifices being arranged to discharge in close proximity to the sides of the burner body opposite thereto.

3. A burner comprising, in combination, a receiving chamber, a plurality of burner arms projecting radially from said chamber,

a combined mixing and expansion tube communicating with said chamber between two of said arms and extending approximately about the said burner arms and the said chamber, means for supplying a mixture of top thereof a V-shaped groove extending to the outer end thereof and each groove having jet orifices in opposite walls thereof arranged to discharge in proximity to the wall opposed thereto, the orifices in one of the walls of each groove being staggered with respect to the orifices in the opposite wall, of said groove.

4. A burner comprising, in combination, a hollow burner body, a combined mixing and expansion tube extending in proximity to said body, and means for supplying a mixture of fluid fuel and air into the receiving end of the mixing tube, the said burner body having in the top thereof a V-shaped groove extending to the outer end thereof and said groove having jet orifices in opposite walls thereof arranged to discharge in proximity to the wall opposed thereto, the orifices in one of the walls of each groovebeing staggered with respect to the orifices in the opposite wall of said groove. v

5. A burner comprising in comblnation a central receiving chamber with burner arms extending therefrom and commumcating therewith, each of sald arms having 1n the top thereof a V-shaped groove having jet orifices in opposite walls thereof arranged to discharge in proximity to the wall opposed thereto, the orifices in one of the walls of each groove being staggered with respect to the orifices in the opposite Wall of said groove, a combined mixing and expansion tube extending approximately around the said chamber and the said burner arms and in close proximity to the said arms, the said tube being provided with an outwardly flared receiving end and having its bore restricted inwardly from and adjacent to such receiving end, and means for delivering a mixture of fluid fuel and air into the flared receiving end of said tube.

In testimony whereof, I hereunto afiix my signature.

JOHN HARRIS. 

